Siden denne tråden omhandler Lake People / Violectric, så poster jeg inn litt informasjon om G100/V100 og V200 fra Fried Reim (CEO), samt noen bilder av G100.
G100 & V200
G100 - Intern strømforsyning, XLR og RCA inn
G100 vs. V100"In the past Lake People products often were judged as: working perfectly - looks like a fridge. Violectric was the answer for people who demanded more. Please note that
[B] the case of V100 is more expensive than the entire G100[/B]. Moreover
V100 has selected semi-conductors, "musical caps" in the signal path, more smoothing capacity, Pre-Gain adjustable from the outside and more space inside for optimized signal tracing. The technical base of all these headphone amps is not as "simple" as claimed in some posts. All amps are working with 60 volt supply voltage (+/-30 volt split supply) what is hard to find in other designs. So the output voltage reaches 20 Veff / +28 dBu. This is essential to drive high impedance cans".
og
"Please note that we develope and manufacture headphone amps since over 25 years. During this quite long period we made about 2 dozens of different designs. The beginning was a voltage followers with an op-amp and just two transitors as can be found in many other (simple) actual designs until now.
As this was not sufficient to drive high impedance headphones (good headphones alway had high impedances in those times) we created a quite unique current amp where the transistors were controlled by the current consumption from a saturated op-amp. These amps had very high output voltage capabilities and as the 2. harmonic was dominating a "smooth" sound. They had been famous in Europe and used ones are sold until now in some online auctions for astonishing prices ... Other designs comprised small power amps wit high operating voltage like LM1876 which can be found in Lake People´s G93 or high voltage, high current buffer designs with OPA551 inside G95/G97 and V90 or amps made with an op-amp and 4 transistors which can be found inside
G100/ V100."
V200 (Basert på et Nakamichi design):"When we started with Violectric
we remembered a circuitry we once made to create a power amp for Lake People. The "inner core" was an adaption from
Nakamichis 420 / 620 power amps. These bipolar amps had been fameous for
power, velocity, low noise, damping factor, reliability under any circumstances. Being the disk jockey for the university disco nights (those where the days) I used my Nakamichi 620 for years for that purpose and it is still working. We early discovered that the
output impedance of an amp is the cause for different sounds from the same headphone. The higher the output impedance of the amp, the higher the influences from the headphone cable (impedance, capacity) and the transducer itself because they become part of a complex system. These influences and interactions may sometimes be helpfull for some sound impressions, sometimes not. Having this in mind it is more understandable that a simple cable may obivously change the sound from a headphone. We share the opinion that an amp manufacturer shall not alter the sound signature from a microphone during recording. Thats why we make transparent mic-amps. And we share the opinion that an amp manufacturer shall not change the sound signature from a speaker or a headphone.
That why we make amps with the lowest possible output impedance because that is the key to control."
Oppsummering:"Subsumption:
V90 is made with OPA551
V100 is made with an op-amp and 4 transistors each channel.
V181 is made with 4 times BUF 634 (quite similar to LME 49600 but we found some advantages to go for BUF 634)
V200 is made with an op-amp and 8 transistors each channel.
All are so powerfull that virtually every dynamic headphone can be driven. They share lowest possible output impedance (highest possible damping factor), a relatively wide frequency range, more than double the output voltage of common headphone amps, lowest noise and lowest distortion.
The conclusion from the above is that sound signatures are relatively close together, but they are not equal. My own and the experiences from our customers show that the differences are small but present. "